Home Add-ons CS-Cart Customer Number (Kundennummer) Pro Add-On

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Last update: 27.04.2026 Supports current CS-Cart version

CS-Cart Customer Number (Kundennummer) Pro Add-On

Stop relying on random user_ids and upgrade to a real customer identity system built for business.

This addon automatically assigns every customer a permanent, human-readable Customer number (Kundennummer) that’s audit-safe and never reused.

It supports both internal IDs for invoices/accounting and external IDs for ERP, payments, and marketplaces, ensuring clean data across all systems.

The result: structured, scalable customer management that finally aligns your shop with real-world operations.

Your CS-Cart product

$74.99

Lifetime plan cost. Learn more

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CS-Cart Customer Number (Kundennummer) Pro

Automatic assignment of permanent, human-readable Kundennummer
Sequential or custom ID formats (e.g. 100001, K-100001, DE-2026-000123)
Immutable IDs — never reused, lifetime-persistent
External ID support (ERP, payment providers, marketplaces)
API-ready for seamless system integration
Fully compatible with invoices, exports, and emails
No core changes — works alongside native CS-Cart user_id

Total:

$74.99

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Lifetime plan

CS-Cart Customer Number (Kundennummer) Pro Add-On

Conditions
Functionality
Updates
Advanced

Usage period

Timeless

During this time, the add-on/theme functionality will be available to you under the terms of the plan

Advanced functionality

Available

The most advanced functionality of the add-on/theme with a period of use according to the terms of the plan

Access to updates

Available

Access to the add-on/theme updates that relates directly to their functional opportunities

Freemium version

Not available

The basic addon/theme functionality with an unlimited usage period (these addon’s functions are available even when subscription is over)

Customization

Developing new features for the add-on/theme according to your requirements and ideas

Installation

Developer's consultation and help with installation of the add-on/theme in your store or marketplace

Configuration

Developer's consultation and help with setting up the add-on/theme in your store or marketplace

Compatibility

Access to the add-on/theme upgrades for new versions of CS-Cart

Advanced functionality

Available

CS-Cart Customer Number (Kundennummer) Pro assigns every customer a permanent, human-readable business ID automatically. It supports both internal Kundennummer for invoicing and external IDs for ERP, payment, and marketplace systems. Built for clean data, reliable tracking, and seamless integration without touching core CS-Cart.

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Product info

CS-Cart Customer Number (Kundennummer) Pro Add-On

Description
Conditions
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Support

Basic general information

Efficiency for the store

Eliminates manual customer identification and reduces accounting errors with consistent, permanent IDs. Speeds up invoicing, ERP sync, and customer lookup across all systems. Improves data integrity and operational efficiency at scale.

How the product works

Automatically generates a unique, human-readable Kundennummer on the customer’s first successful order and stores it permanently. Supports configurable formats (sequential or prefixed) and keeps IDs immutable and never reused. Additional external IDs can be added manually or via API for seamless ERP, payment, and marketplace integration.

Trial Version

Trial version provides you an add-on with full set of features for the period from 3 days to month in depence on condition of the specific vendor. The add-on will be disabled when the trial perod is expired. In case the add-on has a free version, when the trial period is expired, the add-on functionality will be limited in accordance with abilities of the free version. Purchase a subscribtion to the add-on in order to restore the full functionality of the add-on.

Freemium Version

Not available

Free version provides you an ability to use the add-on permanently on special condition. Technical support and individual customization services are not available and the add-on functionality, abilities and adaptation to new cs-cart versions are heavily limited. Purchase the add-on subscription or the lifetime version to get the fully functional add-on version.

By subscription

Not available

By purchasing the subscription to the add-on you get the latest version of the add-on. Full functionality of the add-on, its future updates, individual customization and limited amount of free technical support service are available during the subscription period. When the subscription period is expired, the add-on will be disabled on your store. In case the add-on has a “Free Version”, the add-on won’t be disabled but most of its features, technical support services and many other advantages will no longer be available.

Lifetime Version

Available

This subscription type provides a permanent, fully functional version of the add-on. You won’t have to bother with prolongation of subscription, and technical support service will be unlimited for you. Basically, this subscription type is demanded, in case the fully functional add-on version has been previously used, and you have made a certain conclusions about its purpose and efficiency.

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Documentation

For full information about add-on`s work and settings please click the button at the bottom

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Product support

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Compatible versions

4.20.1
4.19.1.SP2
4.19.1.SP1
4.19.1
4.18.4
4.18.3
4.18.2.SP1
4.18.2
4.18.1.SP1
4.18.1
4.17.2.SP3
4.17.2.SP2
4.17.2.SP1
4.17.2
4.17.1
4.16.2
4.16.1
4.15.2
4.15.1.SP4
4.15.1.SP3
4.15.1.SP2
4.15.1.SP1
4.15.1
4.14.3.SP1
4.14.3
4.14.2.SP1
4.14.2
4.14.1.SP1
4.14.1
4.13.3
4.13.2.SP2
4.13.2.SP1
4.13.2
4.13.1
4.12.2
4.12.1
4.11.5
4.11.4
4.11.3
4.11.2
4.11.1
4.10.4.SP1
4.10.4
4.10.3
4.10.2
4.10.1

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CS-Cart Customer Number (Kundennummer) Pro Add-On

Choose options

CS-Cart Customer Number (Kundennummer) Pro

Lifetime plan

CS-Cart Customer Number (Kundennummer) Pro Add-On

Usage period

Advanced functionality

Access to updates

Freemium version

Customization

Installation

Configuration

Compatibility

Advanced functionality

Changelog

Product info

CS-Cart Customer Number (Kundennummer) Pro Add-On

Basic general information

Efficiency for the store

How the product works

Trial Version

Freemium Version

By subscription

Lifetime Version

Storefront view

Demo instruction

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Documentation

Product support

Compatible versions

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